Magazine pencil



A. FLEMHNG MAGAZINE PENCIL Nov, l, i932.

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2 Sheets-Sheet 1 fs .mzng, www

Filed May l2, 1931 Nov, l, 1932. A. FLEMING MAGAZNE PENCIL Filed May 12, 1951 2 SheS--Sheet 2 Anil/1% Patented Nov. 1, 1932 AMBRosn FLEMING, on wEsfr LYNN, trassacrrnsn'rrs MAGAZINE PENCIL Application led May 12, 1931. Serial No. 536,871'.

This invention Yrelates to lead pencils, and particularly to magazine pencils, and especially to that type wherein the spare leads are contained within the casing of the pencil and adapted to be propelled successively whereby to project beyond a nozzle or tip, for writing purposes.

One object of the invention is to provide a magazine, located wholly within the casing which will automaticallyv dispose a single lead in proper position for propulsion, upon a simple manipulationof the pencil.

Another object is Atoprovide a magazine of this character wherein all' danger of the spare leads becoming jammed, and preventing the proper positioning .of the Ysingle lea-d, is obviated.

Another object is to provide a device, in combination with the casing ofV a magazine pencil, which forms the magazine for the spare leads, and insures the proper operation of the device, at all times.

A further obj ect isto improve the construction of the tip, wherebyto insure the proper holding of the lead and effectively prevent such lead slipping outwardly from such tip, as well as to prevent such lead being pushed back through the tip, during the writing operation. l

Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawings.

In the drawings:

Figure 1 is an elevation of a pencil made in accordance with 'the present invention, the casing being shown in section.

Figure 2 is a longitudinal central sectional view of one end portion of the pencihthe internal mechanism being also insection.

Figure 3 is a similar sectional view of the other end portion of the pencil.

Figure 4 is an enlarged longitudinal .sec-

tional detail view of the tip portion of the pencil.

Figure 5 is a vertical transverse sectional view on the line 5 5 of Figure 2.

Figure 6 is a vertical transverse sectional view on the line .6 6 of Figure 3.

Figure 7'V is a vertical transversesectional viewl on the line 7-7 of Figure 3. Y

Figure 8 is a sectional perspective View of. thetipor tapered end portion of the pencil v casing. 55

Figure 9 is'ja perspective view ofthe friction tube located within Vthe pencil tip.

Figure 10 is a perspective view of the magazine of the pencil, one end of the tube being broken away.

Figure 11 is a propelling wire.

Referring particularly to the accompanying drawings, 10 represents an open ended cylindrical casing having a removable tapering cap 10 on one end thereof, said cap having a lead receiving and holding tip 12 therein, to ywhich more particular reference will be made later herein. Disposed within the casing 10 is the mag- 70 azine and lead projecting unit, represented as a whole by the numeral 13. This lunit inclu'des'a centrally arranged longitudinally extending channel member 14, one end of which is secured within .the central opening of a 7,5 cylindrical block 15, said block havingy the tube entering end thereof slightly reduced in diameter, externally, as shown at 16, to receive thereon one end of a channelmember 17, which -encases the said channel member 14. so A second shorter channel member 18, of the same dia-meter as the channel member 14, land `U-shaped in cross section, has one end secured within the other end of said block 15, and in exact alinement with the channel member 14. Secured to opposite sides of the shorter channel member 18, so yas tol lie in the same plane, and extend from opposite sidesfthereof, are. the elongated plates 19, which form the platform of the magazine, onwhich the spare leads are adapted to rest, such plates being so secured to the channel member 18 as to permit the open upper side of the channel of said tube to be exposed for the reception of a single lead which will roll thereinto from the platform, formed of the plates 19, upon the proper manipulation of the-pencil, as will be explained later herein. Secured to vthe other ends of the lower faces of the plates 19 is a half disk 20, `1,06

60 perspective view of the lead the central opening 21, of which, receives the adjacent end portion of the channel member 18 therein, a portion of the said end of the tube 18 projecting slightly beyond the said ends of the plates and being loca-ted within a socket in the removable cap 10. Rotatable within the end of the casing 10, remote from the cap 10, is a cylindrical blocl; 22, the external portion of which is reduced in diameter to form the portions 23,24, and 25, the former being of the greatest diameter, as shown. The block 22 is preferably hollow and loosely disposed Within the smaller end of said block is the upper end of the before-mentioned channel member 14. Encircling the channel member 14, and having one end bearing against the block 15, is a helically coiled wire member 26, which forms a. feed screw, the other end of said screw receiving therein the smaller end 25, of the member 22,

and being permanently iXed thereto. Engaged on the intermediate portion 24, of the member 22, is one end of a tubular sleeve 27, said end being rolled into a peripheral groove 28, formed in the said portion 24, adjacent the portion 23, whereby to prevent relative longitudinal movement of the member 22 and said sleeve, while at the same time permittingrotary movement of the member 22, with relation to the sleeve. In the outer or larger end of the member 22 there is seated a rubber eraser 29. Encasing the feed screw 26, and having one end secured to the reduced end of the block 15, is the herein-before mentioned sleeve 17, the other end of said sleeve abutting the adjacent end of the sleeve 27. Movable longitudinally within the grooves of the channel members 14 and 18 is a lead propelling wire 31, one end of which is bent to form a laterally directed kink 32, engaging between the coils of the feed screw 26, 1n such manner that, upon rotation of the screw, by mea-ns of the member 22, said screw will cause the movement of the wire 31, longitudinally, within said channel members, whereby to cause the forward end of saidwire to propel a lead to and out of the tip of the pencil. When the magazine and propelling unit 1s placed within the casing 10, the sleeves 17 and 27 are cemented, or otherwise secured to the said casing, whereby to prevent rota-- tion thereof, within the casing, so that the only parts that would b-e movable, with relation to the casing, either longitudinally or rotatively, would be the member 22, the feed screw 26, and the propelling wire 31.

Fitted within the smaller end of the tapered cap 10', is the inner reduced end of the t1p12,hereinbefore mentioned. That portion of the tip, exposed beyond the said end of the cap being externally tapered to form acontinuation of the exterior tapering face of the cap. VThe tip 12 has a longitudinal bore therethrough which is divided into three portions of graduated diameters, and indicated by the numerals 33, 34, and 35, the former being the innermost, and the latter the outermost. Disposed within the intermediate bore portion 34, is the longitudinally split end of a small tube 36, through which a lead is arranged to be fed, said end of the tube, upon initially inserting the same within said bore portion, being contracted, by reason of the fact that the diameter of the said bore portion is slightly lessthan the diameter of the said tube. Between the bore portions 34 and 35 is an abrupt shoulder 37, against which the said split end of the tube 36 abuts, when properly Vand fully inserted in the bore portion 34, while between the bore portions 33 and 34 there is formed an inclined shoulder 38, which serves to cause the contraction of the split eind of the tube 36, upon inserting said tube into said bore 33, and pushing the tube into the bore position 34. As clearly seen in the detail view, Figure 4, the split end of the tube 36 is contracted so that the portions at opposite side of the splits are slightly inclined downwardly and inwardly toward each other, with the result that a firm biting grip will be obtained on the lead, by the inner edges of the end faces lo-f said portions, so as to effectively prevent said lead being forced back into the tip, ywhen pressure is exerted'thereon, during the writing operation, and also to prevent said lead from slipping outwardly from the tip. The inner end of the tube 36 extends inwardly to such an extent as to abut the adjacent end of the channel member 18, for the proper guidance of the lead. After the tube 36 has been properly placed within the bore portion 33, solder, or other means are used to secure the tube within the tip. Uponl reference to Figure 4, it will be particularly noted that the portions of the split end of the tube, forwardly of the inclined shoulder 38, will be out of contact with the walls of the bore POFOD 34 whereby Sadforward i51`0 end of the tube will be free to be flexed outwardly by the lead moving through said tube, and to firmly grip the lead, so as to hold the same from accidental movement in either direction.

To load the pencil, the operator unscrews the tapering cap 10', from the casing, which exposes the-end of the magazine platform, with its central longitudinal groove. The member 22 is rotated toward the left so as to withdraw the feeding wire 31 rearwardly out of theV groove of the shorter channel member 18. The operator then inserts a number of leads into the casing so that they rest on the said platform, whereupon one of said' leads will fall into the groove of the channel member 18. It will be particularly noted that the platform is perfectly horizontal, and does not incline toward said groove, and

"iis

that there is an odd number' of leads on the platform, and one lead in the groove. When an even number of spare leads are used, each of the two intermediate leads would partially overlie the groove by the crowding of the other leads at opposite sides thereof, and be held in such position, thus preventing a single lead from falling into the groove. It has, therefore, been found necessary to so proportion the platform, with respect to the diameters of a certain number of leads, and so dispose the platform in the easing of the pencil, with respect to the diameter of the casing, that only an odd number of leads can lie, side-by-side, on the platform, whereby a condition is produced wherein a singlel lead is directly over the groove, whether or not a lead is within the groove. The operator now rotates the member 22 in a forward direction, or tothe right, which causes the feed or propelling screw 81 to be moved forwardly, by engagement of its kink with the coils of the screw, with the result that the forward end of the wire will re-enter the groove of the channel member 18, and engage against the rear end of the lead now lying within the groove. Further rotation of the member 22 advances the wire 31 so as to propel the lead forwardly through the tube 36, and outwardbore, and a lead receiving and guiding tube having an end longitudinallykerfed to provide iiexible jaws engaged within said bore, said jaws being flexed inwardly by said shoulder for frictionally gripping a lead passing through said tube and adapted to be exed outwardly by said passing lead.

3. In a magazine pencil, a tubular casing having a writing end, a Hat lead supporting platform within the casing cooperating with the latter and arranged in parallel relation to the axis of said casing to form a magazine for leads, said platform having a central grooveand an overall width such that an odd number only of leads can be accommodated, whereby to insure that a single lea-d will always be in position to fall into said groove.

In testimony whereof, I aiiix my signature.

AMBROSE FLEMING.

ly beyond the outer end of the tip 12, to the I desired distance for writing. When the wire has been moved forwardly to its forward limit, and the projecting end of the lead has become completely worn down, the operator rotates the member 22 to the left until said member stops, thereby withdrawing the feed wire from the channel member 18, and permitting another lead to drop into the groove of the channel member 18. The operator then rotates the member to the right, which causes the wire to propel the next lead forwardly against the rear end of the remaining stub of the first lead, thereby advancing this stub forwardly through the tip 12. When the stub has been used, further forward rotation of the member 22 advances the second lead until its forward end projects beyond the forward end of the tip 12. A slight shaking movement of the pencil will cause a lead to fall into the groove of the channel member 1S.

Iliat is claimed is:

1. A tip for the writing end of the casing of a magazine pencil comprising a body having a bore therethrough, and a lead receiving and guiding tube having an end longitudinally lierfed to provide flexible jaws fitted within said bore, the diameter of said bore being slightly less than that of said tube whereby to cause the flexing of said jaws into a position for gripping engagement with a lead passing therethrough, and for outward flexing movej ment by said lead as said lead is forced therethrough.

2. A tip for the writing end of a magazine pencil comprising a body having a bore therethrough and a shoulder at one end of said 

